“My problem with the Orthodox Church is that this is where much of the anti-Semitism that lead to the Shoah came from...”
The East had plenty of its own anti-semitic sentiment, but the West did too for many centuries. When you throw in the new racial theories, Darwinism, Nietzsche, the neo-paganism revival of Wagner and Wotan worship nonsense that flourished in the late 19th-early 20th century you can see where it was all going.
In 1916, the primary argument among Russian Orthodox Priests was what number of buttons you were supposed to have down your Cassock, instead of trying to counter the godless atheism that infected Russia for 75 years.